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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 211 · 40 questions
TalentJR

The fast method (Ten and half again): Multiply by 10: 46 → 460. Halve that answer: half of 460 is 230. Add the two: 460 + 230 = 690.

NameDateTime takenScore ___ / 40
  1. 1.18 × 15 =
  2. 2.58 × 15 =
  3. 3.39 × 15 =
  4. 4.12 × 15 =
  5. 5.63 × 15 =
  6. 6.10 × 15 =
  7. 7.21 × 15 =
  8. 8.42 × 15 =
  9. 9.17 × 15 =
  10. 10.61 × 15 =
  11. 11.59 × 15 =
  12. 12.27 × 15 =
  13. 13.49 × 15 =
  14. 14.49 × 15 =
  15. 15.32 × 15 =
  16. 16.41 × 15 =
  17. 17.45 × 15 =
  18. 18.9 × 15 =
  19. 19.52 × 15 =
  20. 20.35 × 15 =
  21. 21.55 × 15 =
  22. 22.12 × 15 =
  23. 23.16 × 15 =
  24. 24.59 × 15 =
  25. 25.54 × 15 =
  26. 26.15 × 15 =
  27. 27.51 × 15 =
  28. 28.48 × 15 =
  29. 29.27 × 15 =
  30. 30.38 × 15 =
  31. 31.16 × 15 =
  32. 32.22 × 15 =
  33. 33.42 × 15 =
  34. 34.35 × 15 =
  35. 35.20 × 15 =
  36. 36.23 × 15 =
  37. 37.17 × 15 =
  38. 38.25 × 15 =
  39. 39.38 × 15 =
  40. 40.26 × 15 =

Answer key

  1. 270
  2. 870
  3. 585
  4. 180
  5. 945
  6. 150
  7. 315
  8. 630
  9. 255
  10. 915
  11. 885
  12. 405
  13. 735
  14. 735
  15. 480
  16. 615
  17. 675
  18. 135
  19. 780
  20. 525
  21. 825
  22. 180
  23. 240
  24. 885
  25. 810
  26. 225
  27. 765
  28. 720
  29. 405
  30. 570
  31. 240
  32. 330
  33. 630
  34. 525
  35. 300
  36. 345
  37. 255
  38. 375
  39. 570
  40. 390

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